Abstract
To investigate the effect of dinoprost to the exclusion of the purulent exudate, the change of intrauterine bacteria and the reproductive performance in cows with pyometra, 13 Holstein cows with pyometra were treated with tromethamine dinoprost intramuscularly (25 mg as dinoprost) one time on the day when pyometra was diagnosed. Then intrauterine perfusion fluid was collected for bacteriological examination at 3 days and 21 days after dinoprost treatment. In all cows estrus was induced by the dinoprost treatment within four days and the purulent material in the uterus was excreted from the uterus. Although Trueperella pyogenes was isolated in 12 cows out of 13 cows at the first bacteriological examination, it was isolated in only two cows at the second bacteriological examination. Seven out of 10 cows which received artificial insemination became pregnant after the dinoprost treatment. In conclusion, the dinoprost treatment is effective to not only exclude the purulent exudate but also eliminate T. pyogenes from uterus
Highlights
Pyometra is a condition which occurs frequently in cows during the postpartum period and it is defined by the accumulation of purulent material within the uterine lumen, the presence of a persistent Corpus Luteum (CL) and a closed cervix (Mortimer et al, 1993; Sheldon et al, 2006)
Bacteria in the intrauterine perfusion fluid: In all cows, estrus was induced by the dinoprost treatmen within four days and the purulent material in the uterus was excreted from the uterus
T. pyogenes was isolated in only two cows at the second bacteriological examination and Proteus spp. and E. coli which was isolated at the first bacteriological examination disappeared at this time
Summary
Pyometra is a condition which occurs frequently in cows during the postpartum period and it is defined by the accumulation of purulent material within the uterine lumen, the presence of a persistent Corpus Luteum (CL) and a closed cervix (Mortimer et al, 1993; Sheldon et al, 2006). Cows show anestrous and reproductive efficiency is reduced. The treatment method for pyometra was administration of estrogen product and it merely aimed to exudate content of uterus by relaxation of cervix (Roberts, 1971) and the method was replaced by administration of prostaglandin F2α (PGF2α) product (Risco et al, 2007). The report about the treatment results, the change of intrauterine bacteria and the reproductive performance after the PGF2α administration are few. We investigated the effect of the PGF2α administration to bovine pyometra in this study
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